Question

If the refractive index of diamomd is 2.42.What is the meaning of this statement in relation to the speed of light?​

Answer 1

Answer:

It means that the speed of light is 2.42 times slower in diamond as compared to air..

Answer 2

$\green{Answer}$

The statement(The refractive index of diamond is 2.42) tells that

The refractive index of diamond is 2.42times the refractive index of air in vaccum and also the refractive index of diamond is reduced by a factor of 2.42.